Drop-hammer.



J. W. WAGNER.

DROP HAMMER.

APPLICATION IILBD new. 31. 1907.

Patented Mar. 23, 1909.

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J. W. WAGNER.

. DROP HAMMER.

APPLIGATIONIILED our. a1, 1907.

Patented Mar. 23, 1909.

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Stick/n03 JOHN W. WAGNER, OF MARIETTA, OHIO.

DROP-HAMMER.

Specification of Letters Patent.

Patented March 23, 1909.

Application filed October 31, 1907. Serial No. 400,040.

T all whom it may concern:

Be it known that 1, JOHN WV. lVAGNER, a citizen of the United States,residing at Marietta, in the county of Washington and State of Ohio,have invented certain new and useful Improvements in Drop-Hammers, ofwhich the following is a specification, reference being had therein tothe accompanying drawing.

My invention relates to improvements in dro hammers.

e object of my invention is to provide a drop hammer of the characterhereinafter set forth, in which the length and rapidity of the stroke ofthe hammer can be readily changed or varied, thus giving a long or ashort quick stroke to the hammer as is desired.

Another object of my invention is to provide a hammer of this characterin which the hammer is automatically dropped, and in which said drop canbe changed to give a long or a short stroke, or in which the drop can beregulated by hand or foot, as desired.

A still further object of my invention is to provide a more simple,cheap and effective hammer to accomplish the above mentioned objects.

In the accompanying drawings, Figure 1, is a front elevation of myimproved hammer. Fig. 2, is a vertical, sectional view taken on the line2-2 of Fig. 1. Fig. 3, is a perspective view of the shaft-supportingracket and the clutch-operating lever and its connecting parts. Fig. 1,is a pers )ective view of the loose band. Fig. 5, is an en arged,horizontal, sectional view showing another means foroperating the driveshaft. Fig. 6, is an enlarged, perspective view of the belt, showing itsconnecting means with the loose band. Fig. 7, is an enlarged perspectiveview of the rigid pulley carried by the o' crating shaft. ig. 8, is anenlarged side e evation of the rigid pulley and the loose band andclutch mechanism, showing the belt connected thereto.

Referring now to the drawings, 1 represents a base which is made of anydesired form, but preferably of a broad, flat form to form a solid baseto hold the hammer in an 11 right position and prevent the same from titing. Secured to said base in any desired manner are the two upwardlyextending standards 2 and 3 which slightly converge toward their upperends, and are connected at their extreme upper ends by the transversebeam 4. standards below the transverse beam is an enlarged plate 5 whichmore rigidly connects the upper end of the standards, and also forms aguide for the hammer to prevent it from turning, as will be hereinaftermore fully described.

The transverse beam 4 is provided with a guide 6 through which passesthe hammer shaft 8 which also passes through a guide 9 carried by thelower end of the late 5. lhe shaft 8 at its lower end is provided with aclutch 10 held thereon by a set screw 11, and into which the hammer 12is secured by a set screw 13, and by means of which a hammer of anydesired character may be placed in the clutch, according to thecharacter of work to be done.

The base 1 below the hammer is provided with an anvil or vise 14 whichis braced by attaching the bolt 15 to the transverse brace 16 carried bythe upright standards 2 and 3, and said brace further strengthens thestandards.

The standards 2 and 3 on the opposite sides are provided with brackets17 and 18 which are located at a point below the lower edge of the plate5, and mounted in the upper edge of said brackets is a shaft 19 which isprovided at its outer end with a pulley 20 by means of which the shaftmay be driven by a belt. 'ihe said pulley is provided with a crank 21 bymeans of which the hammer may be operated by hand when desired. Theopposite end of the shaft is provided with a ratchet wheel 22, andcarried by the standard 2 is a pawl 23 engaging the ratchet disk andwhereby the shaft 1 9 is prevented from being rotated in but onedirection.

The shaft 19 intermediate the brackets 17 and 18 is provided with apulley wheel 24 which is keyed upon the shaft by means of the set screwThe said pulley wheel is provided with the outer flat bearing surface26, while one edge at opposite sides is provided with theoutwardly-turned flanges 27 and 28. Loosely surrounding the outer flatsurface 26 of the pulley 24 is the band 2.), and the flanges or cars 27and 28 prevent said band from sliding therefrom in one direction.Secured to the inner periphery of the pulley are L-shaped members 30which extend out wardly beyond the periphery of the pulley and preventthe band 29 from sliding from the pulley in the opposite direction. By

Secured to one side of said this arrangement it will be seen that theband 29 is free to rotate upon the periphery of the pulley.

The band 29 is provided with, a. screwthreaded opening 31, and passingaround the band is a strap 32 provided with a series of openings 33. AV-shaped wire loop 34 is provided through which passes the screw 35,said screw passing through one of the openings 33 in the belt andscrewed into the screwthreaded opening 31 in the loose band. The belt 32passes around the band and through the enlarged end of the wire loop 34,whereby the strain of the belt is prevented from being unwound beyond acertain point. The band or cuff 29 has one edge provided with notches 36which are provided with the beveled faces 37 and the straight faces 38,all of which will be hereinafter more fully described.

The plate 5 at its upper end is cut away, as indicated at 39 above, andabove said cutaway portion are journals 40 in which is mounted a drum 41over which the belt passes, and said belt passes down and is permanentlyconnected to a loop 42 carried by the block 43 which is of a broad formand moves up and down against the plate 5. The journals 40, as aboveshown, are mounted upon the standards 2 and 3 between the plate 5 andthe beam 4. The said block 43 is clamped to the hammer shaft 8 by meansof the clip 44, and screws 45, and thus it will be seen that the block43 riding against the plate 5 prevents any oscillation of the hammershaft.

The shaft 19 has loosely mounted thereon a sleeve 46 which is held uponthe shaft by a key 46 so as to have a longitudinal movement, yet heldagainst rotation. The outer end of said sleeve is provided with anannular recess 47, and loosely surrounding the sleeve within the recessis a yoke 48, the lower end of which is secured to a block 49 carried bythe upper end of the spring arm 50. The said spring arm has its lowerend connected to the beam 3" in a rigid manner, whereby the spring armthrough the yoke is at all times holding the sleeve in its inwardposition. The sleeve at its inner end is provided with a rigidoutwardly-extending stud 51 which normally bears against one end of thepulley, as shown in Figs. 5 and 8. The said stud enters the notches 36in the loose band, and is adapted to lock the same to the shaft 19 tocause the rotation of the same with the pulley, and whereby the band isretated for winding the belt thereon for raising the hammer.

Secured to the inner periphery of the pulley 26 by means of screws 52are the cam plates 53 and 54. The cam plate 54 has an opening 55 throughwhich the stud 51 passes, the said opening being of a length to allowthe stud to have the proper movement with the sleeve. The cam plateshave cam surfaces 56 which, when carried around with the pulley by therotation of the shaft,- operate the stud 51. Said cam surface is sopositioned that it engages the spring arm 50 forces the same outwardlytoward the beam 3 drawing the stud 51 out of the notch in the band,allowing it to freely rotate on the pulley.

Connected to the arm 50 is a rod 57; which extends through the bracket18, and is connected to an angle iron 58 carried by the plate 59. Thesaid plate 59 is pivotally connected at its lower end to an angle iron60 which is riveted to the bracket 18. Pivotally connected to the upperend of the plate 59 is a rod 60 which extends down and is pivoted to afoot lever 61 intermediate its ends. Carried by the base 1 is a catch 62under which the foot lever 61 is adapted to spring, and by means ofwhich the lever is held in a downward position.

In order to drive the shaft 19 from an engine and at the same timeprovide means for allowing the engine to continue to run and disengagethe belt from the shaft 19 so that it will not be rotated, I provide apulley 64 keyed to said shaft 19 and having the flanges 65 as shown.Loosely mounted on the periphery of the pulley is a band 66, and flanges65 preventing the band from sliding off the pulley, but at the same timeallowing the band to freely rotate thereon. The outer face of the band66 is provided with ratchet teeth 67 into which a clutch 68 is adaptedto catch and lock the band to the pulley. The clutch, as shown, isslidably mounted upon the shaft 19 as indicated at 69, and said clutchis held in the position shown by the spring 70. The said spring isoperated by a foot or hand lever 71 constructed and arranged the same asthe lever 61, whereby the loose band may be locked to the pulley.Passing around the band is a belt 72 which passes to the engine and isdriven thereby, and whereby by operating the lever 71 the shaft 19 maybe rotated at will without affecting the engine.

The operation of the device is as follows: The shaft 19 is rotatedeither by the pulley 20 or the crank 21, which in turn rotates thesleeve 46, and the stud 51 is locked in one of the notches 36 of theband 29, whereby the band is rotated and the belt 32 is wound thereon.When the cam plate 54 comes in a downward position it engages the springarm 50 forcing the same outwardly, carrying with it the yoke which inturn carries the sleeve and causes the stud 51 to draw from the notchesor notch of the band, releasing the same and causing the weight of thehammershaft and hammer to draw the trap 32, and allowing the band tofreely rotate on the pulley, allowing the hammer to drop. By the timethe hammer has dropped the cam has released the spring arm, which inturn throws the stud 51 into another notch of the band, and the same isagain rotated. The cam plates may be any in number, thus increasing ordecreasingthe length of the throw of the hammer. I have shown the camplates which allow the band to be released twice during each revolutionof the shaft or pulley.

In order to trip the hammer at any desired height the lever 61 isdepressed, which draws the rod 57 outwardly, which in turn draws thespring arm 50 outwardly, drawing the sleeve outwardly causing the sleeveto re lease the stud from the band, and thus allowing the hammer to bereleased at any desired time.

The frame of the hammer is provided with rearwardly-extending springarms 72 between which is mounted the rol1er73 which is adapted to bearagainst the inner face of the belt 32 to keep the same stretched and tocushion the jar on the ratchets when the hammer head drips.

aving thus described my invention, what .I claim and desire to secure byLetters Patent, is

1. A drop hammer comprising a vertical frame, a shaft carried by theframe, a pulley rigidly carried by the shaft, a band mounted upon theperiphery of the pulley, a hammer vertically movable in the frame and abelt connecting the hammer and the band, said band having notches in oneside, a clutch member slidable upon the shaft and adapted to enter thenotches in the band, and a cam plate carried by the pulley for throwingthe clutch out of the notches in the band.

2. A drop hammer comprising a vertical frame, a shaft carried by theframe, a pulley rigidly carried by the shaft, a band loosely mountedupon the periphery of the pulley, a hammer vertical] r movable in theframe, a belt connecting t e band and hammer, said band having notchesin one side, a clutch member slidable upon the shaft, a spring carriedby the frame, and having its upper end connected to the clutch andnormally holding the same in the notches in the band, and a cam platecarried by the pulley for engaging the spring for disengaging the clutchfrom the notches in the band.

3. A drop hammer comprising a vertical frame, a hammer slidably mountedin the frame, a belt supporting said hammer, a shaft rotatably mountedin the frame, a pulley keyed upon said shaft, a bandloosely mounted uponthe periphery of the pulley, and having the belt connected thereto, saidband having notches in one side, a clutch slidably mounted upon theshaft and adapted to interlock with the notches in the band, and meansfor sliding said clutch whereby the clutch locks or unlocks the band tothe shaft.

4. A drop hammer comprising a vertical frame, a hammer slidably mountedin the frame, a belt supporting said hammer, a shaft rotatably mountedin the frame, a pulley keyed upon the shaft, a band loosely mounted uponthe periphery of the pulley and having the belt connected thereto, saidband having notches in one edge, a clutch slidably mounted upon theshaft and adapted to interlock with the notches in the edge of the band,and means carried by the pulley for operating said clutch.

5. A drop hammer comprising a frame, a hammer slidably mounted therein,a belt supporting said hammer, a shaft rotatably mounted in the frame, apulley keyed upon the shaft, a band loosely mounted upon the peripheryof the pulley and having the belt connected thereto, said band havingnotches in one edge, a sleeve slidably mounted u )on the shaft, andhaving a radially-extending stud adapted to engage the notches of theband, a spring normally holding the sleeve in its inward position, meansfor operating said sleeve, and cam plates carried by the pulley foroperating the sleeve 0 eratin means, whereby the band is releasec and ata )ted to rotate or oscillate freely upon the pulley.

6. A drop hammer comprising a frame, a hammer slidably mounted therein,a belt supporting said hammer, a shaft rotatably mounted in the frame, apulley keyed upon the shaft, means for rotating the shaft, a bandloosely mounted upon the outer periphery of the pulley, said band havingnotches in one edge, a sleeve slidably mounted upon the shaft adjacentthe pulley, a stud carried by the sleeve and adapted to enter thenotches in the band, a spring rigidly secured to the frame and having ayoke within a groove in the sleeve, and normally holding the sleeve inits int ard position, and plates carried by the pulley for engaging thespring and forcin the sleeve outwardly and releasing the ban 7. A drophammer comprising a frame, a hammer slidably mounted therein, a beltsupporting said hammer, a shaft rotatably mounted in the frame, a pulleykeyed upon the shaft, a band loosely mounted upon the outer periphery ofthe ulley, said band having notches in one er ge, a sleeve slidablymounted upon the shaft adjacent the pulley, a stud carried by the sleeveand adapted to enter the notches in the band, a spring rigidly securedto the frame, and connected to the sleeve, and normally holding thesleeve in its inward position, and plates carried by the pulley forengaging the spring and forcing the sleeve outwardly and releasing theband, a second pulley keyed upon the shaft, a band loosely mounted uponthe shaft, a clutch for locking the band on the pulley, a foot or handlever for operating the clutch, and a belt passing around the loose bandand driven to the engine.

8. A drop hammer comprising a frame, a hammer slidably mounted therein,a belt supporting said hammer, a shaft rotatably &

mounted in the frame, a pulley keyed upon the shaft, a band looselymounted upon the periphery of the pulley, ears carried by the pulley toprevent the lateral movement of the band thereon, the band havingnotches in one edge, a sleeve slidably mounted upon the shaft adjacentthe pulley, a stud carried by the sleeve and adapted to enter thenotches in the band, a spring rigidly secured to the frame a yokecarried by the upper end of the spring and resting in a groove in thesleeve, said spring normally holding the sleeve inwardly with the studin the notches in the band and a wedge-shaped plate carried by the sideof the pulley and engaging the 5 spring during the rotation of thepulley and forcing the sleeve outwardly moving the arm out of thenotches in the band and releasing said band.

In testimony whereof I affix my signature 20 in presence of twowitnesses.

JOHN W. WAGNER.

Witnesses:

CHAs. H. NIXON, CHAS. H. DANFORD.

